Embryotome



G. HIMROD.

BMBRYOTOME.

(N0 Model.)

No. 523.348. Patented Ju 34. 1894.

WITNESSES:

BY fi mauav,

STATES;

UETE EM BRYQTOM E.

SPECIFICATION forming part.of Letters Patent No. 523,348, dated July 24, 1894.

Application filed August 24, 1893. $erial No.483,896. (No model.)

To all whom it may concern:-

Be it known that I, CHARLES H1MRoD, a citizen of the United States, residing at Lancaster, in the county of Fairfield and State of Ohio, have invented a certain new and useful Improvement in Embryotomes, of which the following is aspecification.

My invention relates to the improvement of that classof surgical instruments which are employed in the practice of embryotomy.

The objects of my invention are to provide 1 a simple, reliable and convenient instrument,

more fully explained hereinafter.

or tool of this class, by means of which the members or parts of a fetus may be severed to facilitate the withdrawal of the body from the womb, and to produce improvements in the construction of said device which will be These objects I accomplish in the manner illustrated in the accompanying drawings, in which.

Figure 1 is a plan or face view of the device showing the jaws open for use and Fig. 2 is a transverse section on line 0c of Fig. 1.

Similarletters refer to similar parts throughout the several views.

a represents a straight bar or stem which, at its outer end terminates in a substantially hook shaped curved blade on jaw b, the inner edge of which is sharpened.

0 represents a knife carrying arm, theinner and enlarged end 0' of which is notched or recessed on its under side at c to fit'over the bar a on which it is adapted to slide. upper portion of said enlarged end 0' above said bar is provided with a horizontal threaded opening 61 there through which extends in the direction of the length of the bar a. This knife arm 0 has secured to the under side thereof an outwardly and forwardly extending knife blade 6, the forward edge of the latter being sharpened and curved or concaved. The heel or inner portion of the blade or jaw e extends beneath the bar a and covers the under side of that portion thereof which is within the recess 0 The knife blade 6 is supported in such plane that when the blades 1) and care driven toward and past each other, the sharpened edges thereof will shear against each other.

The

g represents an operating screw which extends in the direction of and above the bar a, said screw passing through and engaging with the internal threads of the opening (1.

The forward end of the screw 9 is unthreaded and is journaled in a suitable bearing lug h which raises from the forward end of the bar a, while the rear end of said screw has a similar bearing in a lug i which raises from the rear end of the bar. On the outer side of the bearing 1' the screw carries a suitable transverse handle piece The operation and manner of utilizing my invention is substantially as follows: The instrument formed as above described and having its knife jaws separated the desired distance, is inserted through the vagina into the womb and the curved jaws caused to embrace a limb or other member of the fetus to be severed. The screw g is then so turned as to cause a forcing together of the jaws b and 6 through the sliding forward motion thus impartedto the latter. This movement results, as will be seen, in the gradual cutting or severing of the member embraced. The limbs and similar projections thus removed, the extraction of the fetus maybe performed without difficulty.

It is evident that although particularly adapted for use with livestock, the device an operating screw journaled in the lugs on said bar, with a knife blade e, the shank or supporting arm of which is screw tapped and tially as described.

In presence of- O. O. SHEPHERD, FRANKLIN RUBREOHT.

adjustably mounted on saidscrew substan- I CHARLES HIMROD. 

